Boost cranks longer spindle?

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Boost cranks longer spindle?
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flag milanboez
Posted: Dec 10, 2018 at 1:00 Quote
Do boost cranks (e.g. shimano) have a longer spindle than the equivalent none boost cranks? Don't care about chain line etc just want to know about spindle/axle length. Thanks!
flag tkdbboy
Posted: Dec 10, 2018 at 13:46 Quote
milanboez wrote:
Do boost cranks (e.g. shimano) have a longer spindle than the equivalent none boost cranks? Don't care about chain line etc just want to know about spindle/axle length. Thanks!

Nope, its the chainring offset (horizontal difference between where the chainring mounts to cranks and teeth of the chainring) thats different.
Boost offset is 3mm which is (148-142) / 2 ... aka width difference between boost and non boost, then halved because you're only looking at one side.
flag milanboez
Posted: Dec 11, 2018 at 2:14 Quote
tkdbboy wrote:
milanboez wrote:
Do boost cranks (e.g. shimano) have a longer spindle than the equivalent none boost cranks? Don't care about chain line etc just want to know about spindle/axle length. Thanks!

Nope, its the chainring offset (horizontal difference between where the chainring mounts to cranks and teeth of the chainring) thats different.
Boost offset is 3mm which is (148-142) / 2 ... aka width difference between boost and non boost, then halved because you're only looking at one side.

thanks!
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